Static behavior of bolt connected steel-concrete composite beam without post-cast zone

IF 4 3区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Steel and Composite Structures Pub Date : 2021-01-01 DOI:10.12989/SCS.2021.38.4.365
Y. Xing, Yun Zhao, Q. Guo, Jingfeng Jiao, Qingyang Chen, Ben-zhao Fu
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引用次数: 1

Abstract

Although traditional steel-concrete composite beams have excellent structural characteristics, it cannot meet the requirement of quick assembly and repair in the engineering. This paper presents a study on static behavior of bolt connected steel-concrete composite beam without post-cast zone. A three-dimensional finite element model was developed with its accuracy and reliability validated by available experimental results. The analysis results show that in the normal service stage, the bolt is basically in the state of unidirectional stress with the loss of pretightening can be ignored. Parametric studies are presented to quantify the effects of the post-cast zone, size and position of splicing gap on the behavior of the beam. Based on the studies, suggested size of gap and installation order were proposed. It is also confirmed that optimized concrete slab in mid-span can reduce the requirement of construction accuracy.
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无后浇区螺栓连接钢-混凝土组合梁的静力性能
传统的钢-混凝土组合梁虽然具有优良的结构特性,但不能满足工程中快速组装和维修的要求。本文对无后浇区螺栓连接钢-混凝土组合梁的静力性能进行了研究。建立了三维有限元模型,并通过已有的实验结果验证了模型的准确性和可靠性。分析结果表明:在正常使用阶段,锚杆基本处于单向受力状态,预紧损失可以忽略;参数研究提出了量化后浇筑区,尺寸和位置的拼接缝隙对梁的行为的影响。在此基础上,提出了建议的间隙尺寸和安装顺序。同时也证实了优化跨中混凝土板可以降低施工精度要求。
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来源期刊
Steel and Composite Structures
Steel and Composite Structures 工程技术-材料科学:复合
CiteScore
8.50
自引率
19.60%
发文量
0
审稿时长
7.5 months
期刊介绍: Steel & Composite Structures, An International Journal, provides and excellent publication channel which reports the up-to-date research developments in the steel structures and steel-concrete composite structures, and FRP plated structures from the international steel community. The research results reported in this journal address all the aspects of theoretical and experimental research, including Buckling/Stability, Fatigue/Fracture, Fire Performance, Connections, Frames/Bridges, Plates/Shells, Composite Structural Components, Hybrid Structures, Fabrication/Maintenance, Design Codes, Dynamics/Vibrations, Nonferrous Metal Structures, Non-metalic plates, Analytical Methods. The Journal specially wishes to bridge the gap between the theoretical developments and practical applications for the benefits of both academic researchers and practicing engineers. In this light, contributions from the practicing engineers are especially welcome.
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